001 package net.minecraft.client.gui;
002
003 import cpw.mods.fml.common.Side;
004 import cpw.mods.fml.common.asm.SideOnly;
005 import java.io.ByteArrayOutputStream;
006 import java.io.DataOutputStream;
007 import net.minecraft.client.gui.inventory.GuiContainer;
008 import net.minecraft.client.renderer.RenderHelper;
009 import net.minecraft.entity.IMerchant;
010 import net.minecraft.entity.player.InventoryPlayer;
011 import net.minecraft.inventory.ContainerMerchant;
012 import net.minecraft.item.ItemStack;
013 import net.minecraft.network.packet.Packet250CustomPayload;
014 import net.minecraft.util.StatCollector;
015 import net.minecraft.village.MerchantRecipe;
016 import net.minecraft.village.MerchantRecipeList;
017 import net.minecraft.world.World;
018 import org.lwjgl.opengl.GL11;
019 import org.lwjgl.opengl.GL12;
020
021 @SideOnly(Side.CLIENT)
022 public class GuiMerchant extends GuiContainer
023 {
024 /** Instance of IMerchant interface. */
025 private IMerchant theIMerchant;
026 private GuiButtonMerchant nextRecipeButtonIndex;
027 private GuiButtonMerchant previousRecipeButtonIndex;
028 private int currentRecipeIndex = 0;
029
030 public GuiMerchant(InventoryPlayer par1InventoryPlayer, IMerchant par2IMerchant, World par3World)
031 {
032 super(new ContainerMerchant(par1InventoryPlayer, par2IMerchant, par3World));
033 this.theIMerchant = par2IMerchant;
034 }
035
036 /**
037 * Adds the buttons (and other controls) to the screen in question.
038 */
039 public void initGui()
040 {
041 super.initGui();
042 int var1 = (this.width - this.xSize) / 2;
043 int var2 = (this.height - this.ySize) / 2;
044 this.controlList.add(this.nextRecipeButtonIndex = new GuiButtonMerchant(1, var1 + 120 + 27, var2 + 24 - 1, true));
045 this.controlList.add(this.previousRecipeButtonIndex = new GuiButtonMerchant(2, var1 + 36 - 19, var2 + 24 - 1, false));
046 this.nextRecipeButtonIndex.enabled = false;
047 this.previousRecipeButtonIndex.enabled = false;
048 }
049
050 /**
051 * Draw the foreground layer for the GuiContainer (everything in front of the items)
052 */
053 protected void drawGuiContainerForegroundLayer(int par1, int par2)
054 {
055 this.fontRenderer.drawString(StatCollector.translateToLocal("entity.Villager.name"), 56, 6, 4210752);
056 this.fontRenderer.drawString(StatCollector.translateToLocal("container.inventory"), 8, this.ySize - 96 + 2, 4210752);
057 }
058
059 /**
060 * Called from the main game loop to update the screen.
061 */
062 public void updateScreen()
063 {
064 super.updateScreen();
065 MerchantRecipeList var1 = this.theIMerchant.getRecipes(this.mc.thePlayer);
066
067 if (var1 != null)
068 {
069 this.nextRecipeButtonIndex.enabled = this.currentRecipeIndex < var1.size() - 1;
070 this.previousRecipeButtonIndex.enabled = this.currentRecipeIndex > 0;
071 }
072 }
073
074 /**
075 * Fired when a control is clicked. This is the equivalent of ActionListener.actionPerformed(ActionEvent e).
076 */
077 protected void actionPerformed(GuiButton par1GuiButton)
078 {
079 boolean var2 = false;
080
081 if (par1GuiButton == this.nextRecipeButtonIndex)
082 {
083 ++this.currentRecipeIndex;
084 var2 = true;
085 }
086 else if (par1GuiButton == this.previousRecipeButtonIndex)
087 {
088 --this.currentRecipeIndex;
089 var2 = true;
090 }
091
092 if (var2)
093 {
094 ((ContainerMerchant)this.inventorySlots).setCurrentRecipeIndex(this.currentRecipeIndex);
095 ByteArrayOutputStream var3 = new ByteArrayOutputStream();
096 DataOutputStream var4 = new DataOutputStream(var3);
097
098 try
099 {
100 var4.writeInt(this.currentRecipeIndex);
101 this.mc.getSendQueue().addToSendQueue(new Packet250CustomPayload("MC|TrSel", var3.toByteArray()));
102 }
103 catch (Exception var6)
104 {
105 var6.printStackTrace();
106 }
107 }
108 }
109
110 /**
111 * Draw the background layer for the GuiContainer (everything behind the items)
112 */
113 protected void drawGuiContainerBackgroundLayer(float par1, int par2, int par3)
114 {
115 int var4 = this.mc.renderEngine.getTexture("/gui/trading.png");
116 GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
117 this.mc.renderEngine.bindTexture(var4);
118 int var5 = (this.width - this.xSize) / 2;
119 int var6 = (this.height - this.ySize) / 2;
120 this.drawTexturedModalRect(var5, var6, 0, 0, this.xSize, this.ySize);
121 }
122
123 /**
124 * Draws the screen and all the components in it.
125 */
126 public void drawScreen(int par1, int par2, float par3)
127 {
128 super.drawScreen(par1, par2, par3);
129 MerchantRecipeList var4 = this.theIMerchant.getRecipes(this.mc.thePlayer);
130
131 if (var4 != null && !var4.isEmpty())
132 {
133 int var5 = (this.width - this.xSize) / 2;
134 int var6 = (this.height - this.ySize) / 2;
135 int var7 = this.currentRecipeIndex;
136 MerchantRecipe var8 = (MerchantRecipe)var4.get(var7);
137
138 if (var8.func_82784_g())
139 {
140 GL11.glBindTexture(GL11.GL_TEXTURE_2D, this.mc.renderEngine.getTexture("/gui/trading.png"));
141 GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
142 GL11.glDisable(GL11.GL_LIGHTING);
143 this.drawTexturedModalRect(this.guiLeft + 83, this.guiTop + 21, 212, 0, 28, 21);
144 this.drawTexturedModalRect(this.guiLeft + 83, this.guiTop + 51, 212, 0, 28, 21);
145 }
146
147 GL11.glPushMatrix();
148 ItemStack var9 = var8.getItemToBuy();
149 ItemStack var10 = var8.getSecondItemToBuy();
150 ItemStack var11 = var8.getItemToSell();
151 RenderHelper.enableGUIStandardItemLighting();
152 GL11.glDisable(GL11.GL_LIGHTING);
153 GL11.glEnable(GL12.GL_RESCALE_NORMAL);
154 GL11.glEnable(GL11.GL_COLOR_MATERIAL);
155 GL11.glEnable(GL11.GL_LIGHTING);
156 itemRenderer.zLevel = 100.0F;
157 itemRenderer.renderItemAndEffectIntoGUI(this.fontRenderer, this.mc.renderEngine, var9, var5 + 36, var6 + 24);
158 itemRenderer.renderItemOverlayIntoGUI(this.fontRenderer, this.mc.renderEngine, var9, var5 + 36, var6 + 24);
159
160 if (var10 != null)
161 {
162 itemRenderer.renderItemAndEffectIntoGUI(this.fontRenderer, this.mc.renderEngine, var10, var5 + 62, var6 + 24);
163 itemRenderer.renderItemOverlayIntoGUI(this.fontRenderer, this.mc.renderEngine, var10, var5 + 62, var6 + 24);
164 }
165
166 itemRenderer.renderItemAndEffectIntoGUI(this.fontRenderer, this.mc.renderEngine, var11, var5 + 120, var6 + 24);
167 itemRenderer.renderItemOverlayIntoGUI(this.fontRenderer, this.mc.renderEngine, var11, var5 + 120, var6 + 24);
168 itemRenderer.zLevel = 0.0F;
169 GL11.glDisable(GL11.GL_LIGHTING);
170
171 if (this.func_74188_c(36, 24, 16, 16, par1, par2))
172 {
173 this.func_74184_a(var9, par1, par2);
174 }
175 else if (var10 != null && this.func_74188_c(62, 24, 16, 16, par1, par2))
176 {
177 this.func_74184_a(var10, par1, par2);
178 }
179 else if (this.func_74188_c(120, 24, 16, 16, par1, par2))
180 {
181 this.func_74184_a(var11, par1, par2);
182 }
183
184 GL11.glPopMatrix();
185 GL11.glEnable(GL11.GL_LIGHTING);
186 GL11.glEnable(GL11.GL_DEPTH_TEST);
187 RenderHelper.enableStandardItemLighting();
188 }
189 }
190
191 /**
192 * Gets the Instance of IMerchant interface.
193 */
194 public IMerchant getIMerchant()
195 {
196 return this.theIMerchant;
197 }
198 }